The house is in excellent condition, with all rooms, surfaces, appliances, etc. clearly updated in the last few years at most, and the beds were surprisingly comfortable. However, there were 2 issues that diminished our stay somewhat:
1. The AC has not been updated with the rest of the home. It's an old house, with bedrooms on the top floor, so staying there during the hottest days of the summer (low of 80s overnight, 100 during the day) meant that it was unbearably hot when trying to sleep. It's understandably difficult to keep an old house cool during the summer, but the AC outside was visibly old and filthy. There are steps the host should take to ensure the comfort of guests during the summer (replace the unit, provide box fans, install window units, etc.).
2. The host, while kind and responsive, did not provide check-in details until I prompted them at 1:30pm, 30 minutes after the listed 1pm check-in time. They had previously said I would get details a couple hours before the check-in time, then blamed it on the listing being wrong since check-in was "actually" at 2pm. But that still means we did not get details (i.e. a code to the door) until 30 minutes before "actual" check-in time (not a couple hours as stated), and again because I prompted them for it.
Overall, our stay was fine, and we appreciated the condition of the house (clean, modern, comfortable beds). But these two issues were significant enough to cost a couple stars to my rating.